Rockwell-automation T7150A Regent+Plus Communications Modules RS-232, User Manual download pdf (Page 4)

Communications Modules

(T7150A)

Industrial Control Services

are checked by the processor modules’ normal

communications processing.

Failures result in a COMM module error indication at the

processor modules and a COMM error at the communications

module.

Front Panel

Figure

shows t

he physical features of the communications

modules. The front panel of each module contains indicators

showing overall module health, and the transmit and receive

status of each channel. In addition to the front panel

indicators, each communications module has two DB

connectors (female).

COMM Indicator

This red and green LED pair indicates the overall health of

the module. During normal operation the green LED is on. If

a communications module fault is detected, the red LED turns

on and the green LED

turns off.

Transmit/Receive Indicators

These green LEDs are connected directly to the serial signal

lines and flash while data are being transmitted or received.

The TX LED flashes as data are sent from the module, and

the RX LED flashes as data are received by the module.

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Rockwell-automation T7150A Regent+Plus Communications Modules RS-232, User Manual Page 4